From Lamborghini Wiki

This is the sandbox version of the {{Citation}} template.

You can edit this page and {{Citation/core/sandbox}} to test changes to the main template before going live.

• Please check that all the testcases in Template:Citation/testcases pass before going live.
• After unsuccessful changes please revert to last working version so others can experiment

When copying

1. Copy contents of Template:Citation/core/sandbox to Template:Citation/core
2. Copy contents of Template:Citation/sandbox to Template:Citation
3. In Template:Citation change the transclude links from {{Citation/core/sandbox}} to {{Citation/core}}